I am trying to repair my dishwasher that has a stainless interior. I need to use stainless sheet metal screws so they wont corrode. I've got holes drilled and the screws go into the thin stainless just fine. The problem I'm having is that in the place I'm repairing the stainless is welded to a hard metal bracket. The stainless screws will not tap through the hard metal. The head just strips out trying. Here's a pic
I've tried drilling a bigger hole through the hard metal, but I can't control my drill that well. (I started with #4 screws, and through error and frustration I'm up to having to use #8 screws, which might stick up too far. This project is getting frustrating.)
Can I buy a harder screw to tap the treads through the hard steel then replace them with the stainless screws? If anybody has any other suggestions I'm open.